不反应的

Thus, we redesigned and synthesized a series of new precursors devoid of the unfavourable structural elements for the organocatalytic intramoleculor aldol reactions.

我们重新设计合成了该关环前体的衍生物，希望除去分子中不利于Aldol反应的结构单元以实现关环反应。

The experimental results showed that the raw materials can be totally conversed when reacted for 45 min;and the average size of prepared barium carbonate was 1 μm.It also discovered that crystal water was not feasible for accelerating the reaction speed and increasing the degree of crystallization.

试验结果表明：反应45 min原料即可完全转化，制备的碳酸钡颗粒平均尺寸约1 μm，并且发现利用结晶水加快反应速度、提高产物结晶程度是不可行的。

The ability of the chiral bis-imidazolium salt for asymmetric catalytic benzoin condensation has been probed. It has shown good catalytic activity for benzoin condensation, but no enantioselectivity has been detected.

探讨了手性双咪唑鎓盐不对称催化苯偶姻缩合反应的性能，结果表明其对苯偶姻缩合反应具有高的催化活性，但未能显示对映选择性。

Pressure is not the important influence factor on the degradation of PP.

反应压力是影响反应的一个不重要的因素。

And the mechanism of ATRP is discussed from the view of complex-catalytic reaction. It is deduced that the active center in ATRP is not pure radical but complex active center, which maybe a complex with radical and complex ion. The structure of active center may have a "bridge"structure formed through propaganating radical and transition metal ion, and the active center exists in a"cage"generated by ligand-transition metal ion-organic halide and monomer or solvent.

论文运用基团贡献理论对一些实验现象和结果进行了讨论和分析，并结合研究结果对络合催化引发原子转移自由基聚合反应的机理进行了初步的探讨，认为：过渡金属化合物与有机配体参与的络合催化引发原子转移自由基聚合反应中，聚合反应的活性中心不是纯粹的自由基活性中心，而是与过渡金属相结合的、有着某种"笼"结构存在的复合式活性中心，同时该活性中心以自由基特性为主，同时兼具某种程度的其它活性中心特征（如阳离子和络合聚合活性中心）。

Imatinib, a BCR-ABL tyrosine kinase inhibitor, is able to induce a complete cytogenetic response in more than 85% of patients with CML. However, the researchers note that patients with a complete cytogenic response tend to relapse when imatinib is discontinued, and less than 10% of patients achieve a molecular remission, defined by an undetectable residual disease using real-time quantitative–polymerase chain reaction.

Imatinib是一种BCR-ABL酪胺酸激酶抑制物，可以在85%以上的CML病患诱导完整的细胞生成反应；不过，研究者指出，完整细胞生成反应的病患倾向在停用imatinib时复发，不到10%的病患达到分子生物学上的缓解，其定义为以即时定量聚合酶连锁反应侦测不出残余疾病。

Imatinib, a BCR-ABL tyrosine kinase inhibitor, is able to induce a complete cytogenetic response in more than 85% of patients with CML. However, the researchers note that patients with a complete cytogenic response tend to relapse when imatinib is discontinued, and less than 10% of patients achieve a molecular remission, defined by an undetectable residual disease using real-time quantitative–polymerase chain reaction.

Imatinib是一种BCR-ABL酪胺酸激酶抑制物，可以在85%以上的CML病患诱导完整的细胞生成反应；不过，研究者指出，完整细胞生成反应的病患倾向在停用imatinib时復发，不到10%的病患达到分子生物学上的缓解，其定义为以即时定量聚合酶连锁反应侦测不出残餘疾病。

Since H〓S and SO〓 adsorbed on TiO〓 could react with each other and TiO〓 is the medium of their electron transfer, thus SO〓 could not be adsorbed quite strong on the active site of TiO〓, which makes it more resistant to sulfating and increase the stability of catalyst. Finally, the model and mechanism of the reduction of SO〓 by NH〓 to elemental sulfur is advanced as follows: on the sulfide catalyst, ammonia is decomposed to N〓 and H〓, and H〓 reacts with SO〓 to form the intermedium of H〓S; then H〓S and SO〓 react as Claus reaction on TiO〓 catalyst.

反应系统中过量水蒸气的存在使催化剂表面某些活性位被水蒸气抑制使活性和选择性有较大幅度降低，但这种影响是可逆的，不会造成催化剂永久性中毒；另外当单质硫和水蒸气同时存在时，在〓催化剂上能够生成硫化氢和二氧化硫，而且由于硫化氢和二氧化硫化学吸附能力不同而导致它们的脱附顺序不同，硫化氢的生成温度总是低于二氧化硫的生成温度，说明过量水蒸气的存在会导致氧化物催化剂上逆克劳斯反应的发生；而在硫化物催化剂上几乎没有硫化氢和二氧化硫生成，说明硫化物催化剂能够抑制逆克劳斯反应的发生。

Chiral SalanCrX complexesa saturated version of SalenCr(ⅢX are designed,and in conjunction with an ionic quaternary ammonium salt or organic strong base can efficiently catalyze the asymmetric,regio-and stereoselective alternating copolymerization of CO_2 with rac-PO at mild conditions to afford isotactic-enriched polycarbonates with～95%head-to-tail linkages and moderate enantioselectivity.

本论文在Salen构型配体的基础上，设计合成了一系列手性Salan型铬配合物，并将其与季铵盐/有机强碱组成亲电-亲核双组分催化体系，在室温下可以有效的催化CO_2和环氧丙烷的不对称交替共聚反应，实现了CO_2和环氧丙烷的不对称交替共聚反应的区域和立体化学控制，得到95%的头尾连接单元和中等光学纯度(对映体过量值ee%≈70%)的全同结构的聚碳酸酯。

The main reason for the poor effect is: incomplete disaster relief system, beef-witted response, unseasonal action, insufficient investment, bad administration of officials, incomplete and improper disaster reducing and aid measures.

国民政府黄泛救灾效果不佳的原因主要是：救灾体制不完善；反应迟钝，救助不及时；资金投入量不足；吏治腐败；减灾救助措施不到位、不得法等。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。